Exact same issue here did you ever find out what was happening?
Construct 2 from steam was working perfectly but then I had to re-install windows on my computer and after doing so and re-installing steam/construct 2 when i click the icon nothing happens
no application opens i don't get any errors the windows hour glass barely even pops up for a quick flash and then poof nothing
I actually came here to post my own thread on the issue but i saw this one and didn't want to post a redundant issue since as far as I can tell I am experiencing the exact same issue
If it helps any I am opted in to the beta downloads